CN201425280Y

CN201425280Y - Electric shock prevention device for LED lamp tube

Info

Publication number: CN201425280Y
Application number: CN2009201321697U
Authority: CN
Inventors: 黎勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-03-17
Anticipated expiration: 2019-05-22

Abstract

The utility model discloses an electric shock prevention device for an LED lamp tube. Switch devices are internally arranged in the end covers at the two ends of the LED lamp tube; circuit contacts are utilized to break and conduct the electrical connection between the lamp bases of the end covers and the inside of the end covers; and the switch device can be either a mechanical switch or any other electrical switch. The utility model has the advantages of simple structure, low cost and reliable working, and solves the problem that an internal circuit cannot temporarily achieve the electric shock prevention effect, thereby saving substantial cost.

Description

LED fluorescent tube anti-electric shock apparatus

Technical field

The utility model relates to a kind of LED fluorescent tube parts, relates in particular to a kind of LED fluorescent tube anti-electric shock apparatus.

Background technology

Along with the extensive use of LED illumination, by several LED or string or and etc. the lamp bar that is similar to former fluorescent lamp profile formed be applied on the present fluorescent tube support.They can substitute traditional fluorescent lamp tube very easily.By contrast, it is long that the LED fluorescent tube has more the life-span, advantages such as energy saving, environmental protection.But common LED fluorescent tube has just been continued to use original fluorescent tube lamp bracket, has changed into several LED fluorescent tube luminous by the mode of serial or parallel connection.

The LED fluorescent tube has been installed the power supply for the work of LED lamp group in fluorescent tube inside.Compare with fluorescent lamp tube, change has taken place in power supply the principle, and two electrodes of former fluorescent tube end cap are respectively live wire and zero line, and present LED fluorescent tube is an electrode with two electrodes of limit end cap now, can start to exchange fire line or zero line.Whole lamp tube ends is respectively the live wire and the zero line of civil power, and this is the difference with original fluorescent tube.

Therefore, we when mounted, if forget the powered-down switch, this moment lamp bracket two ends in, wherein an end must be live wire.And we when mounted, just an end that inserts earlier is a live wire, then line voltage can be added in by the prime of internal circuit board on the other termination electrode of fluorescent tube, we this moment again accidentally other positions of hand or health meet the electrode of this end, then line voltage can be added on our human body, paralysis sense is gently then arranged, heavy then can be subjected to electric injury, there is potential safety hazard.

The utility model utilizes mechanical contact to disconnect and in conjunction with end cap lamp base and inner being electrically connected, this device is actually a mechanical switch; Eliminated the potential safety hazard when installing, even carelessness, such as not having to change fluorescent tube under the situation of powered-down, line voltage can not be added on the other termination electrode of fluorescent tube yet, has ensured the safety when changing fluorescent tube.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of LED fluorescent tube anti-electric shock apparatus.

The utility model is achieved in that

In the end cap of the two ends of LED fluorescent tube, built-in a kind of switching device; Utilize circuit contact to disconnect and being electrically connected in conjunction with end cap lamp base and inside; This switching device can be a mechanical switch, also can be other electronic switch.

This mechanical switch utilizes mechanical contact to disconnect and in conjunction with end cap lamp base and inner being electrically connected, this mechanical switch comprises end cap lamp base, end cap shell, contact cap, inner spring, assister bar, contact chip, conductive copper sheet, outer spring, pcb board; Contact cap appears four convex surfaces by housings and goes out, and inner spring is enclosed within the middle of contact cap and assister bar and the contact chip, the bottom contact chip of ining succession, and outer spring is fixed on the circular pcb board, and pcb board rests on the inner circular step of end cap shell.

This switching device that is positioned at two ends is not before fluorescent tube sticks into tube stand, and to the outer ejection of pipe, the switch contact of the inside and the contact point on the pcb board disconnect under the contact cap effect of spring force outside; Only after lamp tube ends sticked into tube stand fully, the end face of tube stand can be with contact cap inwardly jacking successively, and at this moment the contact chip on the contact cap can connect the effect of playing out thereby be communicated with internal electric along with being combined with the pcb board upper contact by jacking.

As shown in the figure, the whole end cap shell 2 of mechanical switch described in the utility model, injection molded by fire retardant plastic, end cap stitch 1 is the brass material, with 2 assemblings of end cap shell, assembling back and pcb board 9 welding guarantee the solid and reliable of structure.

Contact cap 3 appears four convex surfaces by housings and goes out, and exposes between the stitch four sides, and the small gap on the outer rim is stuck on the stitch post, prevents its left and right sides play when upper and lower displacement.

Inner spring 4 is enclosed within contact cap 3 and assister bar 5 is middle with contact chip 6, ins succession and contact 6 in the bottom, and its effect is exactly the contact pressure that increases contact chip, improves the contact reliability of whole switch.

Outer spring 8 is fixed on the circular pcb board 6, and its effect is exactly to allow parts such as contact cap reset, and makes its whole switch be in open position when not contacting.

When contact cap 3 was accepted external force, outer spring was to lower compression, and assister bar 5 promotes compression under the power of inner spring, made internal interface contact 6 and two conductive copper sheet 7 conductings, formed path.

When contact cap 3 was not subjected to external force, internal interface contact 6 and two conductive copper sheet 7 not conductings formed open circuit. realize protective effect.

Pcb board 9 rests on the inner circular step of end cap shell, play firm stitch, fixedly outer spring, connect from the fluorescent tube internal circuit, with the conductive copper sheet welding, combine with contact chip 6 again and realizes that switch, the whole switch module of sealing partly do not allow air etc. enter effects such as fluorescent tube inside.

End cap stitch and end cap shell are ultrasonic bonding.

We know, during installation, the lamp base of fluorescent tube will stick into the draw-in groove the inside, two ends of lamp bracket and go, our this device be exactly have only be in place fully after, the contact switch of end cap inside just can be connected interconnector, stitch on the end cap at this time just can be connected with power supply and internal wiring, and the fluorescent tube energising just can be lighted.When not snapping into, inner contact and the electric shock switch on the pcb board disconnect, so the stitch that exposes is not charged, even certain one of hand or health has touched the lamp base of end cap, also can not get an electric shock.Thereby reach the effect that prevents Danger Electric shock risk.

The utlity model has following beneficial effect: simple in structure, cost is low, reliable operation; Solve the problem of the temporary transient insurmountable protection against electric shock of internal circuit, saved great amount of cost.The utility model also can be effectively to its inner sealing, and the blocking-up humid air enters fluorescent tube inside, reduces the influence to the LED lamp plate.

Description of drawings

Fig. 1 is the described LED fluorescent tube of a utility model embodiment anti-electric shock apparatus schematic diagram.

Fig. 2 is the part explosive view of the utility model embodiment.

Among the figure, 1. end cap stitch, 2. end cap shell, 3. contact cap, 4. inner spring, 5. assister bar, 6. contact chip, 7. conductive copper sheet, 8. outer spring, 9.PCB plate.

The specific embodiment

Present embodiment comprises end cap lamp base 1, end cap shell 2, contact cap 3, inner spring 4, assister bar 5, contact chip 6, conductive copper sheet 7, outer spring 8, pcb board 9.As shown in Figure 2, whole end cap shell 2 is injection molded by fire retardant plastic, and end cap stitch 1 is the brass material, and with 2 assemblings of end cap shell, assembling back and pcb board 9 welding guarantee the solid and reliable of structure.

Contact cap 3 appears four convex surfaces by housings and goes out, and high 2.7mm exposes between the stitch four sides, and the small gap on the outer rim is stuck on the stitch post, prevents its left and right sides play when upper and lower displacement.

Outer spring 8 is fixed on the circular pcb board 6, and its effect is exactly to allow parts such as contact cap reset, and makes its whole switch be in open position when not contacting.When contact cap 3 is accepted external force, compress into 1-1.7mm, outer spring is to lower compression, and assister bar 5 promotes compression under the power of inner spring, make internal interface contact 6 and two conductive copper sheet 7 conductings, forms path.

High when contact cap 3 is not subjected to external force is 2.7mm, inner 6. contact chips and two 7. not conductings of conductive copper sheet, and leaving highly is that 1mm forms open circuit. realize protective effect.

Claims

1, a kind of LED fluorescent tube anti-electric shock apparatus is characterized in that: in the end cap of the two ends of LED fluorescent tube, and built-in a kind of switching device; Utilize circuit contact to disconnect and being electrically connected in conjunction with end cap lamp base and inside; This switching device can be a mechanical switch, also can be other electronic switch.

2, LED fluorescent tube anti-electric shock apparatus according to claim 1, it is characterized in that: this mechanical switch utilizes mechanical contact to disconnect and in conjunction with end cap lamp base and inner being electrically connected, this mechanical switch comprises end cap lamp base, end cap shell, contact cap, inner spring, assister bar, contact chip, conductive copper sheet, outer spring, pcb board; Contact cap appears four convex surfaces by housings and goes out, and inner spring is enclosed within the middle of contact cap and assister bar and the contact chip, the bottom contact chip of ining succession, and outer spring is fixed on the circular pcb board, and pcb board rests on the inner circular step of end cap shell.

3, LED fluorescent tube anti-electric shock apparatus according to claim 1 and 2, it is characterized in that: the end cap stitch is the brass material.

4, LED fluorescent tube anti-electric shock apparatus according to claim 1 and 2, it is characterized in that: the end cap shell is injection molded by fire retardant plastic.

5, LED fluorescent tube anti-electric shock apparatus according to claim 1 and 2 is characterized in that: contact cap appears four convex surfaces by housings and goes out, and exposes between the stitch four sides, and the small gap on the outer rim is stuck on the stitch post.